Survivability of lambs in relation to their dam’s haemoglobin variants

Iyiola-Tunji, A. O.; Akpa, G. N.; Nwagu, B. I.; Adeyinka, I. A.

doi:10.2298/bah1402215i

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…At the same time, the weakest links between the characteristics of wool fibers were found for HbBB hemoglobin type. IYIOLA-TUNJI et al, (2014) reported that lambs that are born to mothers with HbAB hemoglobin type had a higher survival rate compared with lambs born to ewes with two other hemoglobin types. Those authors suggested that for further reproduction should be left the individuals with HbAB hemoglobin type, because the lambs of such ewes are resistant and more vital.…”

Section: Resultsmentioning

confidence: 99%

Relationship between the genetic hemoglobin polymorphism, morphometry and fertility of Pramenka sheep breed from Central Bosnia

et al. 2017

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The characteristics of these sheep are highlighted depth measures of external appearance with modest width measures. Another weaker feature of Pramenka sheep is poor fertility. Despite the mentioned disadvantages, Pramenka sheep is the most grown sheep in Central Bosnia and sheep production is based on it. Methodical selection to improve the characteristics of Pramenka sheep has not applied. However, sheep breeders tend to improve the qualitative and quantitative characteristics of sheep, and that means more intensive work on the selection. In this sense, genetic markers are used to carry out the selection lately. Three types of hemoglobin, HbAA, Hband HbBB of Pramenka sheep population (at 189 male and female animals) in Central Bosnia were segregated by the method of electrophoresis. The following genotype frequencies are determined: HbAA 0.11; Hb0.41; and HbBB 0.48. Allele frequencies, HbA and HbB for Pramenka sheep breed (estimate based on genotype frequencies) were 0.315 and 0.685. It was found that the population of sheep was in the equilibrium of the frequency of hemoglobin genotypes. Sheep with HbAA genotype had lower morphometric measures in relation to the other two genotypes. The statistically significant difference between sheep with Hbgenotype and HbAA genotype was recorded only for the shin perimeter. The ewes that lambed one lamb have the following frequency of HbAA, Hband HbBB genotypes: 0.13; 0.40 and 0.47, and the ewes with twins: 0.02; 0.40 and 0.58. Fertility, as important quantitative characteristic of sheep, was more emphasized in genotype HbBB, than in HbAA genotype. This was confirmed by the statistical analysis.

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Section: Resultsmentioning

confidence: 99%

Relationship between the genetic hemoglobin polymorphism, morphometry and fertility of Pramenka sheep breed from Central Bosnia

et al. 2017

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“…The effects of Hb BB and Hb AB on reproductive performance in sheep have been reported. Ewes carrying these types of hemoglobin have been repeatedly documented to have a better fertility than ewes with Hb AA type (Dally et al, 1980;Iyiola-Tunji et al, 2014;Važić et al, 2017).The relationship between Hb genotypes and productive traits in local sheep needs to be investigated.…”

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confidence: 99%

Preliminary Investigation of Hemoglobin Polymorphism and Its Association With Some Morphometric Traits and Hematological Parameters of Sheep and Goats in Northeastern Libya.

Sitmo¹,

Saad²

2018

IJAR

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Local sheep and goats in northeastern Libya were studied for hemoglobin polymorphism. The study was also aimed to unveil a possible relationship that might exist between hemoglobin genotypes, some selected morphometric traits, and hematological parameters. Both phenotypic data and blood samples were collected from a total of 69 adult sheep and 23 adult goats of both sexes. The blood parameters, hemoglobin concentration and packed cell volume values were determined and then the red blood cells were extracted, lysed, and subjected to agarose gel electrophoresis. Two variants of hemoglobin, Hb A and Hb B with a frequency of 0.22, 0.78, and 0.63, 0.37, respectively for pooled sheep and goats populations were observed; indicating the predominance of Hb B in sheep and Hb A in goats. These co-dominant alleles caused the presence of three Hb genotypes AA, BB and AB in both sheep and goats. The largest number of animals of sheep belong to Hb BB (62.32%) and the smallest number to HbAA (5.80%). For goats, the genotype AA had the higher frequency (52.17%) and the type AB was less spread (21.74). The body parameters, body long, shoulder height, chest perimeter, and horn length were not significantly influenced (P>0.05) by Hb variants in populations under the study. Hb genotypes also had no significant (P>0.05) effect on hemoglobin and packed cell volume values.

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Effect of hemoglobin polymorphism on performance traits in indigenous chicken genotypes in Nigeria

Orunmuyi

Muhammad

Musa

et al. 2020

Trop Anim Health Prod

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Survivability of lambs in relation to their dam’s haemoglobin variants

Cited by 3 publications

References 13 publications

Relationship between the genetic hemoglobin polymorphism, morphometry and fertility of Pramenka sheep breed from Central Bosnia

Relationship between the genetic hemoglobin polymorphism, morphometry and fertility of Pramenka sheep breed from Central Bosnia

Preliminary Investigation of Hemoglobin Polymorphism and Its Association With Some Morphometric Traits and Hematological Parameters of Sheep and Goats in Northeastern Libya.

Effect of hemoglobin polymorphism on performance traits in indigenous chicken genotypes in Nigeria

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